One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,10)(6,7)(8,13)(11,15)(14,16)(17,18,22,24)(19,23,25,20)(21,29,31,26)(27,28,30,32)(33,34,39,37)(35,36,42,40)(38,45,46,41)(43,47,48,44)(2,7)(4,13)(5,9)(11,14)(17,19)(18,23)(20,24)(21,30)(22,25)(26,28)(27,31)(29,32)(34,37)(35,42)(41,45)(43,48) involution — undirected(2,7)(3,10)(8,12)(11,14)(18,24)(19,25)(26,29)(27,30)(33,35,39,42)(34,40,37,36)(38,43,46,48)(41,47,45,44)(1,3)(2,5)(4,14)(6,10)(7,9)(8,16)(11,13)(12,15)(17,19)(18,23)(20,24)(21,27)(22,25)(26,32)(28,29)(30,31)(33,36)(34,35)(37,42)(38,44)(39,40)(41,43)(45,48)(46,47) involution — undirected(1,4)(2,8)(3,11)(5,15)(6,13)(7,12)(9,16)(10,14)(17,20,22,23)(18,25,24,19)(21,28,31,32)(26,30,29,27)(33,37,39,34)(35,36,42,40)(38,45,46,41)(43,44,48,47)(1,5)(2,3)(4,15)(6,9)(7,10)(8,11)(12,14)(13,16)(17,21,22,31)(18,26,24,29)(19,27,25,30)(20,28,23,32)(33,38,39,46)(34,41,37,45)(35,43,42,48)(36,44,40,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.